Power

Supply

OFF

ON

TPS22929

GND

ON

GND

TPS22929

www.ti.com

SLVSB39

– DECEMBER 2011

Ultra-Small, Low on Resistance Load Switch with Controlled Turn-on

Check for Samples: TPS22929

1

FEATURES

DESCRIPTION

•

Integrated Single Load Switch

controlled turn on. The device contains a P-channel

•

Small SOT23-6 package

MOSFET that can operate over an input voltage

•

Input Voltage Range: 1.4-V to 5.5-V

range of 1.4 V to 5.5 V. The switch is controlled by an

on/off input (ON), which is capable of interfacing

•

Low ON-Resistance

directly

with

low-voltage

control

signals.

The

TPS22929 is active high enable.

The TPS22929 contains a 150-

Ω on-chip load

resistor for quick output discharge when the switch is

turned off. The rise time of the device is internally

controlled in order to avoid inrush current. The

•

1.8-A Continuous Switch Current (25C)

TPS22929 family has various slew rate options

•

Low Threshold Control Input

(see ).

•

Controlled Slew-rate Options

The

TPS22929

device

provides

circuit

breaker

•

Under-Voltage Lock Out

functionality by latching off the power-switch during

•

Quick Output Discharge Transistor

reverse voltage situations. An internal reverse voltage

comparator disables the power-switch when the

•

Reverse Current Protection

APPLICATIONS

towards the input side of the switch. Reverse current

•

Portable Industrial Equipment

is always active, even when the power-switch is

disabled. Additionally, under-voltage lockout (UVLO)

•

Portable Medical Equipment

protection turns the switch off if the input voltage is

•

Portable Media Players

too low.

•

Point Of Sales Terminal

The TPS22929 is available in an small, space-saving

•

GPS Devices

6-pin SOT23-6 package and is characterized for

•

Digital Cameras

operation

over

the

free-air

temperature

range

of

–40°C to 85°C.

•

Portable Instrumentation

•

Smartphones

TYPICAL APPLICATION

Table 1. Feature List

MAXIMUM OUTPUT

rON (typ) at 3.3

Rise Time at 3.3 V

QUICK OUTPUT

DEVICE

CURRENT

ENABLE

V

(typ)

(3.3 V and 25

115-m

Ω

0.5

µs

Yes

1.8-A

Active High

115-m

Ω

100

µs

Yes

1.8-A

Active High

115-m

Ω

1000

µs

Yes

1.8-A

Active High

TPS22929D

115-m

Ω

4500

µs

Yes

1.8-A

Active High

(1)

This feature discharges the output of the switch to ground through an 150-

Ω resistor, preventing the output from floating.

(2)

See

“Thermal Considerations” section in Application Information to calculate maximum continuous current for a specific application.

(3)

Contact local sales/distributor or factory for availability.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.